Non-clogging burner-tip.



F. E. BALDWIN.

NON-GLOGGING BURNER TIP.

APPLICATION FILED MAR.6, 191a.

1,075,960. I Patented Oct; 14, 1918.

fi'guua Ina enter:

COLUMBIA PLANOGRAI'H coU AsmNc'roN 1111 c4 UNETED STATES FREDERIC E.BALDWIN, OF NEW YORK, N. Y.

NON-CLOGGIN G BURNER-TIP.

T 0 all whom it may concern:

Be it known that I, Fnnnnnro E. BALDWIN, a citizen of the United States,and a resident of Richmond borough, New York city, New York, haveinvented certain new and useful Improvements in Non- CloggingBurner-Tips, of which the following is a specification.

The object of my invention is to provide a burner tip which will not getclogged by dust or other particles carried in the stream of gas or vaporwhich passes through the burner. Some gases and vapors naturally carrymore dust or fine particles of ash or unconsumed products of combustionthan others. And my invention is particularly applicable to acetylenelamps, where the tendency for the flowing gas to carry particles ofcarbid dust or ash is very great. But it will also be found valuable anduseful in other styles of lamps or burners in a degree proportioned tothe amount of particles of dust or other unconsumed solids which theirigniting gas or vapor normally carries, and to the minuteness of theaperture through which said gas or vapor exits from the burner.

A gas or vapor absolutely free from any foreign particles held insuspension, is rarely met with in the practical use of burners, and Ihave found that the clogging of burner tips comes from the fact thatthese particles are naturally propelled into the fine exit aperture, orapertures, of the tip by the shape of the interior of the tip and theforce of the flowing gas or vapor.

Burner tips are provided sometimes with a single GXlb aperture, andsometimes with a plurality of exit apertures, but in all cases, so faras I am aware, these apertures are set at the bottom of what may becalled a pocket. In other words, the interior chamber or channel of theburner tip is tapered, or otherwise narrowed toward the aperture, sothat the exit hole is placed at the narrowest part of extreme point ofthe channel. In this way the gas or vapor is, of course, concentratedupon the exit-orifice or aperture, and the force at that pointisincreased by such concentration. But, at the same time, any particles ofdust, soot, ash, or other foreign substances which may be carried intosuspension in the gas or vapor are also concentrated to the same point.VVhenever therefore, one or more particles too big Specification ofLetters Patent.

Application filed March 6, 1913.

Patented (Pet. 14:, 1913. Serial No. 752,279.

for the exit hole are brought thither, by the outflowing gas, or vapor,or even when smaller particles which individually might escape throughthe orifice, are pushed to gether by the pressure of the flow, theorifice is sure to clog. The light then flickers or goes out, as thecase may be. This is particularly apt to occur in acetylene lamps,especially those of a small size, where the single exit-orifice is ofminute caliber. As is well known, acetylene gas is an attenuated gas,and minuteness is a requisite for the burner orifice. And, when theacetylene is generated in the reservoir part of the lamp itself, it isnext to impossible by strainers or otherwise, to free the gas from allthe minute particles of the disintegrated earbid, or ash, so as toprevent them from reaching the burner tip. Clogging constantly results,and cleaning pins or other devices are in frequent demand to open up theclogged orifices. To obviate these clifficulties, I provide a burner tipin which the interior chamber or channel is so shaped, that instead ofconcentrating these floating or suspended particles at the exit hole, Iforce them away from said hole by the very force of the flowing gas orvapor itself. In other words, that part of the inner wall of the burnertip which is pierced by the exitorifice, instead of tapering in thedirection of the flow to form a pocket with the exit hole at the bottom,I taper in a directly opposite direction, that is taper against the flowso that it serves as a sort of cut-water or deflector which throws asidethe floating particles into pockets or recesses which are beyond theexit hole. By this means, no suspended particle can reach theexit-orifice, unless it is shot straight at it, and held straight towardit by the center line of the gas or vapor stream; a thing almost impossible to occur in actual use.

In the accompanying drawing, I have shown the simplest form of myimproved burner tip, being one with a single exitorifice.

Figure l is a top plan. F 2 is a vertical section in line 2-2 of Fig. 1.

Same letters indicate similar parts in the different figures.

A, is a burner tip shell which is preferably made of brass, or otherconvenient and suitable material.

B, is the mouth of said tip, which is pre confined and motionless erablyfunnel-shape, although the exterior funnel shape is not so important asthe interior taper of the wall a, as shown in Fig. 2.

C, is the exit-orifice.

From the foregoing description, it will be readily seen, by looking atthe drawing, that gas or vapor entering this tip from the burner inwhich the end, Z), is of course inserted as usual, will flow straighttoward the upper end of the burner, but only the center line of thestream will go through the exit-orifice C. All suspended particles willbe carried against the end of the burner into the pockets 0, 0, wherethey will be held, by the pressure of the gas, or vapor, all of whichwill tend to increase the pressure of the center stream through theexit-orifice, but the particles in suspension will never emerge from thepockets or acquire any tendency to clog the exit-orifice, as they willnever get into the straight center of the stream, where the onwardpressure is greatest.

The great advantage of my improved burner tip will, I think, now bereadily understood without further explanation.

I claim A non-clogging acetylene burner tip which consists of a shellthe end of which surrounding the exit-orifice forms a ree'ntrant cone,one surface of which serves as a flame chamber, and the other surface asa conical battle projecting against the direction of the flow, the gasexit-orifice being approximately circular in form and located at theapex of the reentrant cone.

FREDERIG E. BALDWIN. Witnesses LILLIAN E. LINDQUIST, V. P. PREBLE.

five cents each, by addressing the Commissioner of I'atents Washington,D. C.

